Spiral spring for the closing of doors.



FJDIETZ.

SPIRAL SPRING FOR THE CLOSING 0F DOORS. APPLICATION-HLED NOV. 14. L914. RENEWED'SEPLZJI 1916.

1,215,498, 7 Patented Feb. 3, 1917. f

FRED DIETZ, OF IRVINGTON, NEW JERSEY.

SPIRAL SPRING FOR THE CLOSING OF DOORS.

Specification of Letters Patent.

Patented Feb. 13, 1917.

Application filed November 14, 1914, Serial No. 872,233. Renewed September 23, 1916. Serial No. 121,904.

To all whom it may concern:

Be it known that I, FRED Drarz', a citizen of the United States, residing at Irvin on, in the county of Essex and State of ew Jersey, have invented certain'new and useful Improvements in Spiral Springs for the Closing of Doors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part of this specificae tion.

The present invention has reference, generally, to improvements in spring closing the door-spring is operatively associated.

Other objects of this invention, not at this time more particularly enumerated, will be clearly understood from the following detailed description ofthe same. 4 The invention therefore consists in the novel construction of door-spring hereinafter set forth; and, furthermore, the invention consists in the several novel arrangements and combinations of the various parts, as .well as in the details of the construction of the same, all of which will be hereinafter more fully described, andthen finally embodied in the claims, which form a part of this specification.

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 is a plan view of the novel doorspring detached from the door; Fig. 2 is a front elevation of the same; Fig. 3 is a side elevation of the same; and Fig. 4 is a front elevation showing said novel door-spring connected with a door-hinge in operative relation to the door and door-frame.

Similar characters of .reference are-employed in all of the hereinabove described views to indicate corresponding parts.

Referring now to-the said drawings, the reference character -B indicates a coiled spring body, the ends of which terminate in oppositely extending wings or arms C, which are bent back upon themselves to form bearing-portions D at their free ends, said bearing-portions D extending parallel to the axis of the coiled-spring body B.

The reference character E indicates a door-hinge, the pintle of which is provided with the usual projecting knob or head F possessing the usual annular groove G be- Itween said head F and shoulder H of the 4 upon said Wings or arms C, and the bearlug-portions are pressed against the doorbody and the door-frame. This action results in moving the spiral or coiled-spring body laterally in stopped engagement with the head or knob of the hinge-pintle. In order to prevent the spiral or coiled-spring body B from riding upwardly and off the knob or head F, and thereby dislocating the same from its operative relation, and displacing the door-spring. from the door, I have provided said spiral or coiled-spring body with a stop-member A, formed by pressing or bending inward a convolution of the spiral or' coiled spring body so as to form a straight laterally extending portion therein which projects into the opening of the spiral or coiled-spring body; when, therefore, the spiral or coiled-spring body is moved against the knob or'head F, as above described, said stop-member A thus formed is forced beneath the knob or head F into the annular groove G, so that the same by engaging the hinge-pintle beneath said knob or head F prevents the spiral or coming displaced from its operative relation to the door. While the bending inwardly of a convolution of the coiled-spring body to make a stop member A as illustrated, is a cheap and convenient construction, it is not intended to limit this invention thereto, as it may be obviously departed from and the same result attained.

The bearing-portions D are of the same or slightly longer in length than the length of the spiral or coiled-spring body B, and as before stated are parallel to the axis of the latter; consequently they maintain the spiral or coiled-spring body in its proper vertical alinement with the door-hinge at all times, and at the same time afford. a broad and stable contact with the door and door-frame.

In operation the action of the door-spring is as follows :lVhen the door is swung open the wing or arm C in contact therewith is moved with the door with the effect of tightening the convolutions of the spiral or coiled-spring body, thereby increasing the tension of the same. When the door is released the tension thus stored in the spiral or coiled-spring body B tends to return the wing or arm C, which is in contact with the door, back to normal initial position thereby exerting a pressure on the door-body sufficient to swing the same back to its closed position, in the mannerreadily to be understood from an inspection of the drawings.

It will be clearly understood from the above description that my present invention provides a very simple and easily applied door-spring, and one which is provided with a novel holding-means or stop-means for engaging the head of a hinge-pintle upon which it is secured so that said spring is safely maintained and held against accidental removal or displacement from operative relation to the door-hinge, door-body and door-frame, without the use of any fastening means, such as screws, nails or the like, 'so that marring of the door by such fastening means is avoided.

WVhen desired the said bearing portion D may be covered with some resilient and nonabrasive material in the form of the sleeve C, which may be made of rubber, felt, leather or any other similar material which will prevent the wings or arms C and their bearing-portions D from marring, scratching, or otherwise defacing the door or doorframe.

the pintle of a door-hinge.

2. A door-spring comprising a coiledspring body the ends of which terminate in and form a pair of oppositely and laterally extending arms having bearing portions formed at their free ends, said arms being adapted to respectively engage a door-body and a portion of the door-frame in which the door is hung, and means connected with said coiled-spring body for engaging the head of a door-hinge pintle inserted in said coiled-spring body to prevent the accidental displacement of the latter from assembled operative relation to the pintle of a doorhinge, said means comprising an inwardly pressed straight laterally extending stopmember formed in connection with one of the convolutions intermediate of the ends of said coiled-spring body, and extending laterally through the interior and to one side of the longitudinal opening through the convolutions of said coiled-spring body.

3. Adoorspring comprising a coiled-spring body having its ends extending laterally in opposite directions forming arms, the said coiled-spring body being constructed to receive a member attached to the door or its casing and introduced into the coiled-spring body inthe direction of the axis of the said body, and means located within the coiledspring body and connecting the said body and the said member to prevent the displacement of the body with respect to the said member.

Date: November 13, 1914.

FRED DIETZ.

Witnesses AUGUST WIRTH, CHAS. WIRTH. 

